A hazardous fault line that runs south of downtown Seattle may have formed when the edge of the North American continent tore apart 55 million years ago, a new study suggests. Seattle sits atop the ...

The researchers compared their new landslide map to ground motions generated by different Seattle Fault earthquake scenarios. The scenario that best matches the landslide clusters, they found, is one ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Earthquakes occur along fractures, or faults, in the earth’s ...

A seismic expert explains what could happen if an 8.8-magnitude earthquake struck the Cascadia Subduction Zone – similar to Tuesday's quake near Russia. Western Washington still lacks critical tsunami ...